45=3(b+7)

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Solution for 45=3(b+7) equation: 



45=3(b+7)

We move all terms to the left:

45-(3(b+7))=0



We calculate terms in parentheses: -(3(b+7)), so:

3(b+7)

We multiply parentheses

3b+21

Back to the equation:

-(3b+21)



We get rid of parentheses

-3b-21+45=0

We add all the numbers together, and all the variables

-3b+24=0

We move all terms containing b to the left, all other terms to the right

-3b=-24

b=-24/-3

b=+8

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